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o atomic number of protons neutrons and electrons oxygen atomic number of protons neutrons and electrons oxygen atom how many protons neutrons and electrons oxygen atom protons neutrons and electrons o atomic number mass number protons neutrons electrons a stable oxygen atom contains equal numbers of protons neutrons and electrons an 18 o atom contains the same number of protons neutrons and electrons how many protons neutrons and electrons does o have how many electrons does o what is the number of protons neutrons and electrons
